3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = '123456789'; echo substr($str, -3, 3);

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
8.3.60.0030.01716.38
8.3.50.0050.01322.06
8.3.40.0120.00318.76
8.3.30.0100.00319.09
8.3.20.0040.00420.39
8.3.10.0040.00423.65
8.3.00.0040.00419.00
8.2.180.0090.00918.04
8.2.170.0070.00722.96
8.2.160.0070.00720.38
8.2.150.0050.00324.18
8.2.140.0080.00024.66
8.2.130.0070.00026.16
8.2.120.0070.00022.25
8.2.110.0040.00422.28
8.2.100.0060.00617.91
8.2.90.0030.00519.05
8.2.80.0030.00617.97
8.2.70.0030.00617.63
8.2.60.0050.00317.79
8.2.50.0030.00618.07
8.2.40.0000.00817.97
8.2.30.0000.00818.00
8.2.20.0050.00317.56
8.2.10.0000.00818.05
8.2.00.0000.00817.48
8.1.280.0110.00425.92
8.1.270.0040.00423.96
8.1.260.0080.00026.35
8.1.250.0040.00428.09
8.1.240.0060.00323.98
8.1.230.0080.00419.10
8.1.220.0000.00817.74
8.1.210.0040.00418.77
8.1.200.0030.00617.00
8.1.190.0030.00517.40
8.1.180.0040.00418.10
8.1.170.0000.00818.50
8.1.160.0040.00421.95
8.1.150.0000.00718.61
8.1.140.0080.00017.29
8.1.130.0000.00717.70
8.1.120.0030.00617.39
8.1.110.0040.00417.39
8.1.100.0070.00017.42
8.1.90.0050.00317.32
8.1.80.0030.00317.40
8.1.70.0000.00717.26
8.1.60.0030.00517.48
8.1.50.0000.00817.47
8.1.40.0040.00417.48
8.1.30.0000.00817.44
8.1.20.0000.00717.57
8.1.10.0000.00717.50
8.1.00.0050.00317.46
8.0.300.0030.00618.77
8.0.290.0040.00417.05
8.0.280.0040.00418.44
8.0.270.0000.00717.32
8.0.260.0060.00016.77
8.0.250.0000.00617.00
8.0.240.0000.00816.97
8.0.230.0000.00716.77
8.0.220.0060.00016.80
8.0.210.0000.00716.70
8.0.200.0000.00716.78
8.0.190.0040.00416.85
8.0.180.0040.00416.75
8.0.170.0040.00416.79
8.0.160.0040.00416.86
8.0.150.0030.00316.78
8.0.140.0030.00316.75
8.0.130.0000.00713.26
8.0.120.0070.00016.79
8.0.110.0040.00416.66
8.0.100.0070.00016.89
8.0.90.0000.00816.84
8.0.80.0040.01116.75
8.0.70.0040.00416.80
8.0.60.0070.00016.82
8.0.50.0000.00716.84
8.0.30.0100.00816.85
8.0.20.0110.00717.40
8.0.10.0000.00816.86
8.0.00.0120.00916.72
7.4.330.0000.00515.09
7.4.320.0000.00716.43
7.4.300.0000.00616.51
7.4.290.0000.00716.39
7.4.280.0000.00816.54
7.4.270.0070.00016.50
7.4.260.0000.00716.38
7.4.250.0040.00416.42
7.4.240.0030.00316.47
7.4.230.0030.00316.24
7.4.220.0140.00416.52
7.4.210.0050.01116.46
7.4.200.0030.00316.52
7.4.190.0030.00316.60
7.4.160.0090.01216.55
7.4.150.0070.01117.40
7.4.140.0100.00717.86
7.4.130.0120.00616.46
7.4.120.0080.00816.36
7.4.110.0100.01016.22
7.4.100.0060.01016.45
7.4.90.0130.00316.43
7.4.80.0070.01119.39
7.4.70.0060.00916.42
7.4.60.0080.00816.43
7.4.50.0030.00316.57
7.4.40.0070.01122.77
7.4.30.0110.01116.50
7.4.00.0070.01114.85
7.3.330.0000.00613.07
7.3.320.0000.00612.86
7.3.310.0000.00715.96
7.3.300.0030.00316.00
7.3.290.0100.01016.13
7.3.280.0070.01416.15
7.3.270.0030.01317.40
7.3.260.0040.01516.28
7.3.250.0070.01416.32
7.3.240.0030.01316.54
7.3.230.0160.00316.52
7.3.210.0130.00316.21
7.3.200.0070.01119.39
7.3.190.0130.00316.21
7.3.180.0110.00416.39
7.3.170.0110.00416.30
7.3.160.0100.01016.54
7.3.120.0030.01214.41
7.2.330.0070.01416.54
7.2.320.0090.01516.48
7.2.310.0160.00316.41
7.2.300.0060.01016.36
7.2.290.0090.00916.59
7.2.00.0030.00919.28
7.1.100.0050.00518.09
7.1.70.0100.00716.89
7.1.60.0000.01217.27
7.1.50.0040.01416.54
7.1.00.0000.08022.45
7.0.200.0090.00416.76
7.0.140.0000.07722.00
7.0.70.0070.07721.76
7.0.60.0030.05721.71
7.0.50.0070.05322.12
7.0.40.0000.08320.06
7.0.30.0000.05320.18
7.0.20.0070.07720.13
7.0.10.0030.05020.09
7.0.00.0000.08320.22
5.6.280.0070.07021.14
5.6.220.0070.03720.73
5.6.210.0130.07320.67
5.6.200.0070.06721.02
5.6.190.0100.08021.04
5.6.180.0100.08020.96
5.6.170.0030.08721.04
5.6.160.0130.07321.13
5.6.150.0030.06321.00
5.6.140.0030.08021.04
5.6.130.0070.06320.92
5.6.120.0030.07020.95
5.6.110.0000.08721.05
5.6.100.0070.05720.97
5.6.90.0170.06321.08
5.6.80.0070.07720.33
5.6.70.0000.05020.43
5.6.60.0070.07320.38
5.6.50.0130.05720.37
5.6.40.0000.08320.38
5.6.30.0030.07320.48
5.6.20.0070.08020.30
5.6.10.0030.07020.28
5.6.00.0030.05020.39
5.5.360.0170.04720.37
5.5.350.0030.06020.41
5.5.340.0000.05020.79
5.5.330.0070.08320.92
5.5.320.0000.09020.90
5.5.310.0030.08720.82
5.5.300.0100.08020.85
5.5.290.0070.06720.86
5.5.280.0070.06320.63
5.5.270.0030.07720.82
5.5.260.0100.08320.78
5.5.250.0100.07020.61
5.5.240.0000.08020.13
5.5.230.0030.09020.10
5.5.220.0070.07020.20
5.5.210.0100.05020.26
5.5.200.0030.07320.23
5.5.190.0000.09020.18
5.5.180.0070.07020.17
5.5.160.0070.04020.10
5.5.150.0100.07720.23
5.5.140.0070.07020.20
5.5.130.0100.07320.20
5.5.120.0100.08020.09
5.5.110.0070.08320.17
5.5.100.0030.07019.97
5.5.90.0070.07320.08
5.5.80.0000.08319.96
5.5.70.0000.04719.99
5.5.60.0000.08720.15
5.5.50.0070.07720.05
5.5.40.0030.07720.07
5.5.30.0030.05320.05
5.5.20.0100.07720.03
5.5.10.0030.06320.02
5.5.00.0130.07020.02
5.4.450.0070.04719.56
5.4.440.0100.08719.38
5.4.430.0030.07319.34
5.4.420.0000.05719.57
5.4.410.0030.07719.32
5.4.400.0030.07319.06
5.4.390.0030.06019.05
5.4.380.0030.03719.03
5.4.370.0000.07319.03
5.4.360.0070.07319.12
5.4.350.0000.08319.05
5.4.340.0030.07318.95
5.4.320.0000.07018.95
5.4.310.0070.07018.81
5.4.300.0030.09018.98
5.4.290.0070.06019.04
5.4.280.0030.08019.05
5.4.270.0000.06719.04
5.4.260.0030.08019.06
5.4.250.0030.07719.04
5.4.240.0000.06318.97
5.4.230.0070.06019.02
5.4.220.0030.06318.94
5.4.210.0070.07018.97
5.4.200.0030.07719.03
5.4.190.0030.07719.13
5.4.180.0030.08019.08
5.4.170.0100.06319.13
5.4.160.0070.05319.12
5.4.150.0030.07719.07
5.4.140.0030.07016.38
5.4.130.0170.05716.29
5.4.120.0030.07016.31
5.4.110.0030.04716.36
5.4.100.0030.07316.49
5.4.90.0030.06016.21
5.4.80.0030.05016.22
5.4.70.0030.04716.24
5.4.60.0000.07716.30
5.4.50.0000.04016.35
5.4.40.0030.06716.23
5.4.30.0030.06316.19
5.4.20.0100.06016.28
5.4.10.0030.04316.31
5.4.00.0030.06315.72
5.3.290.0030.07714.52
5.3.280.0070.07014.45
5.3.270.0000.08014.43
5.3.260.0070.05014.58
5.3.250.0030.04014.59
5.3.240.0070.07014.51
5.3.230.0030.05714.43
5.3.220.0030.06314.42
5.3.210.0070.05714.42
5.3.200.0070.06314.39
5.3.190.0030.06714.42
5.3.180.0000.05014.41
5.3.170.0030.07314.55
5.3.160.0000.08714.56
5.3.150.0070.07014.50
5.3.140.0100.07314.56
5.3.130.0070.07714.40
5.3.120.0030.07014.55
5.3.110.0030.05314.53
5.3.100.0000.04014.01
5.3.90.0070.06313.87
5.3.80.0000.03713.77
5.3.70.0070.07714.00
5.3.60.0030.06013.91
5.3.50.0200.06313.80
5.3.40.0030.07013.80
5.3.30.0070.05013.88
5.3.20.0000.04013.44
5.3.10.0030.03313.64
5.3.00.0100.03013.62
5.2.170.0070.05012.22
5.2.160.0070.05712.22
5.2.150.0000.04312.22
5.2.140.0000.04012.22
5.2.130.0000.04712.22
5.2.120.0100.02312.22
5.2.110.0030.03712.22
5.2.100.0000.06712.22
5.2.90.0070.05712.22
5.2.80.0070.05312.22
5.2.70.0030.06012.22
5.2.60.0000.03012.22
5.2.50.0070.04012.22
5.2.40.0030.04312.22
5.2.30.0030.06312.22
5.2.20.0030.04012.22
5.2.10.0030.06312.22
5.2.00.0030.04012.22
5.1.60.0030.05012.22
5.1.50.0070.04712.22
5.1.40.0030.04312.22
5.1.30.0000.06012.22
5.1.20.0030.04012.22
5.1.10.0030.03312.22
5.1.00.0030.02312.22
5.0.50.0000.04012.22
5.0.40.0000.03312.22
5.0.30.0030.03312.22
5.0.20.0030.02312.22
5.0.10.0030.02312.22
5.0.00.0000.05312.22
4.4.90.0000.03312.22
4.4.80.0030.02712.22
4.4.70.0030.03012.22
4.4.60.0000.02012.22
4.4.50.0000.02012.22
4.4.40.0000.04012.22
4.4.30.0030.03312.22
4.4.20.0030.03312.22
4.4.10.0000.01712.22
4.4.00.0000.03712.22
4.3.110.0000.02012.22
4.3.100.0000.03312.22
4.3.90.0030.01312.22
4.3.80.0000.05012.22
4.3.70.0000.01712.22
4.3.60.0030.02312.22
4.3.50.0070.02312.22
4.3.40.0030.04312.22
4.3.30.0000.03712.22
4.3.20.0000.03312.22
4.3.10.0000.02712.22
4.3.00.0000.02712.22

preferences:
37.89 ms | 400 KiB | 5 Q